{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18103630",
    "entityType": "User",
    "nonce": "0x73c6b7eab7de9b3b72eec150fa68eb2c6eff15db0f1ffe1858cd0ab431c89e73",
    "signature": "0xbfc92acc94b31df897537b8030597ec1b422c7a43972fdcb3e2f69ca3ab58dd85b988f15027105805d4d824ca7503b81b753852872f3e53cfd6ffa70051ff0191b",
    "signer": "0x90d627796C9E2071AAd9F8C20f6dCE95587F6d13",
    "userId": "560619378"
  }
}